For the Los Angeles Auto Show next week, BMW will show off a new i3 concept – "admittedly a tease," we were told – and not some sort of plug-in i4, as had been rumored. While we won't be seeing the production version of the city electric, the good news is that each iteration of the concept does bring us closer to the production version. For example, the i3 on display in New York as part of BMW's "Born Electric" tour last week still had glass doors. It's pretty obvious that the produc